Originally posted by jamesmck ...Professional repair cost is prohibitive, and I am not up to DIY....
A friend of mine is happy with his PZ-1 and has been using it since the mid 1990's. I'd call it a durable camera based on his experience.
Or you might consider a third option - there are some people on this forum who have experience with the mirror gear repair and might be willing to do yours for less than a professional shop would. User "violini" is one (though I can't speak for him for sure), and I am another, for starters.
If you do end up buying a different camera, as you are planning now, I hope you'll consider sending your old ZX to one of us to salvage parts from or to repair, rather than tossing it in the trash. Anyway good luck with whichever route you take.